Question

electronegativities of the elements na, al, p, and cl follow a specific trend across the period. based on this trend, an electron will be most strongly attracted to

na.
al.
p.
cl.

Explanation:

Step1: Recall electronegativity trend

Electronegativity increases across a period from left - to - right in the periodic table.

Step2: Locate elements in period

Na, Al, P, and Cl are in the same period (third period). Na is the left - most, followed by Al, then P, and Cl is the right - most.

Step3: Determine most electronegative element

Since Cl is the right - most among them, it has the highest electronegativity. The higher the electronegativity of an element, the more strongly it attracts electrons.

Answer:

Cl.